This week鈥檚 new questions
When driving over hills, is it more fuel-efficient to accelerate downhill or聽maintain a steady speed? And why is our heart not in the centre of our body?
Regulars
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When driving over hills, is it more fuel-efficient to accelerate downhill or聽maintain a steady speed? And why is our heart not in the centre of our body?
Why do humans like flowers? And what's the best way to hold my hands under a hot air blower to dry them efficiently?